The calculated distance (air line) between Rastignano-Carteria di Sesto and Trieste is approximately 145 miles respectively 233 kilometers.
By car or train, the actual journey to Trieste is certainly longer, as only the direct route (as the crow flies) between Rastignano-Carteria di Sesto and Trieste has been calculated here.
Air line (approximately)
233 kilometers
126 nautical miles